With 21 international caps to his name, Buckley has just been called up into Ireland's RBS 6 Nations squad and is looking forward to a new challenge in England.
"I felt I needed a new challenge. I believe the best club to give me that challenge and also help me become a better player is Sale Sharks. They are hungry and ambitious for success and I want to be a part of that," said Buckley.
Buckley's signature is the first for new executive director of sport Steve Diamond and the former Russia coach is delighted to bring the Cork-born player into his squad.
"This is a statement of intent of what Sale Sharks want to achieve. We want to build a team around a dominant pack of forwards," said Diamond.
"With Andrew Sheridan having committed himself to the club and now adding Tony, we are shaping up well for next season.
"I am looking forward to working with Tony and know he is excited to be joining Sale Sharks."
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